Seamless metallic boat colsrstrtjctiojff



J. DIMES.

SEAMLESS METALLIC BOAT CONSTRUCTION.

. APPLICATION FILED MAY 11. 1918.

1,803,046. Patented May6,1919.

UNITED ST .rosnen nurse, or naoonmrn", new roan.

SEAMLESS METALLIC BOAT CONSTRUCTION.

incense,

Specification of Letters Patent.

Patented May 6, 19%.

Application filed May 17, 1918. Serial Ito. 235,16 l.

To all whom it may concern Be it known that L'JosErH DIMES, a citizen of thellnited States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Seamless Metallic Boat Construction, of which the following is a specification.

This invention relates to an improvement in a seamless, metallic boat such as an ordinary metallic life-boat, motor boat, or other small vessel.

One of the objects of the invention is to do away with the riveting of the-sheets of metal or the plates used in the construction of a metallic boat, also the riveting of the supporting ribs to the side of the boat, all of which take considerable time, as the rivets have to be set very close in order to make the vessel watertight. Moreover, it is quite expensive to do the rivetin even on a small boat, and my invention su stitutes therefor a construction that is simple, exceedingly strong, and that eliminates all riveting.

One of the principal objects of the invention, is to make it possible to produce quickly and without the use of skilled labor, such as riveters, etc., boats or other small vessels in large numbers,- upon a standardized shape or construction.

A further advantage ofmy invention in thus doing away with rivets, is thus ex-" plained' Under the thrust and vibration of engines or motors of sufficient power to secure high speed, there is a constant strain on the rivets that are depended on to hold the skin tothe frame, and on the rivets attaching the sheets of metal to each other, forming the skin of the boat. Under this strain the rivets will wear on the material of the skin if they are harder than the skin, thereby causing leaks and eventually making holes through which the rivets will drop out, or if the material of the skin is harder than the rivets, it will cut elf the rivets permit.

venticn as applied to an ordinary life-boatv Fig. 2 represents an end view showing the U-shaped ribs or stringers.

Fig. 3 represents a sectional view on the line 3-3, Fig. 2.

Fig. 4 is a sectional view on the line 44,

Fig. 1, showing the seamless construction boat.

The same reference characters indicate the same parts in all the figures.

Referring to the numerals on the drawings, there is shown and the invention con sists of a seamless metallic boat 1, having a hull or shell 3, embodying a plurality of U- shaped stringers or corrugations 2, irregu- Larly spaced and running lengthwise of the oat.

The shell 3 of the boat consists of seamless metallic substance which is given the desired shape by means of a mold or form upon which the metal is deposited by a process of el'ectro-deposition. The U-shaped stringers or corrugations 2 are formed at the sam time and as a part of the skin or shell of the boat, making them a homogeneous part of the hull. The corrugations 2 are formed in any desired shape or thickness.

In the same way and at the same'time the bow-piece 4:, the stern-piece 5, the keel 6, and the unwale 7 are constructed of any desired s apeand thickness "by the same process of electro-deposition and all these necessary and vital parts of the craft are made seamless and a homogeneous part one with the other. This is a great advantage as a homogeneous-hull is stronger than any hull 'of same weight using rivets, and it also eliminates the possibility of leakage by wearing of riveted parts.

In Fig. 1 the parts numbered 3 represent the shell of the boat and the parts 2 repre sent the corrugated U-shaped stringers running longitudinally, and spaced at suitable intervals.

The,- skin 3 of the boat is smooth, except where the corrugated stringers 2 are laced and these may be so positioned that they incline upward toward the bow-piece and thus I interior of the boat thereby increasing its buoyancy.

The U-sh'aped stringers are also so positioned and shaped toward the bottom of the boat as to act as bilge-keels to minimize roll-' ing. The stringers also act as fenders protecting the hull from abrasion.

Fig. 2, which is an endview, shows the way in which the U-shaped stringers 2, appear ascorrugations above the smooth skin of the hull 3. In this figure, I also have illustrated the gunwale 7 which I have formed in a new way by using the U-shaped construction at this point, thereby gaining strength and rigidity as well as a foundation to insert a strengthening piece in the U-shaped recess.

In Fig. 4 I have shown a sectional view on the line 3-3, Fig. 2, showing the seamless hull 3. The bow-piece 4, stern-piece 5 and the keel 6, are a continuation of the seamless hull and may beof any desired shape and thickness according to the dimensions of the boat.

The U-shaped stringers 2 may be of the same or a different thickness from the hull or skin 3, and in the preferred form they are made thicker at the central portion so as to irgcrease the strength and rigidity of the In Fig. 5 I have illustrated the preferred form of the U-shaped stringer 2, which is made thicker at its central portion than the adjacent sides or shell 3 of the boat.

A simple form of my invention is thus shown, but when an engine is used in the boat, the Ushaped stringers are so positioned in the bottom of the boat so as to permit the insertion of lengthwise beams, parallel with the keel, upon which th engine or motor rests.

I have hereinbefore described merely a simple and preferred form of my invention, but it will be understood that various modi fications may be made in the arrangement and construction of the parts thereof without departing fromthe spirit and scope of my invention.

Having thus described. the invention, I claim as new and desire to secure by Letters Patent,

1. A metallic boat comprising a bow-piece, a stern-piece and a hull, all formed in one piece; and a plurality of corrugations formed integrally with the hull and running longitudinally thereof, said corrugations being thicker centrally than at their line of juncture with the hull.

2. A seamless metallic boat comprising a bow-piece, a stern-piece and a hull consisting of a shell having a plurality of corrugations in spaced-apart relation disposed thereon, and formed integrally and homogeneously therewith, said corrugations being thickest centrally and diminishing in thickness to their line of juncture with the intermediate portions of the hull.

In testimony whereof I have afiixed my signature in the presence of two witnesses.

JOSEPH DIMES.

VVi-tnesses JOHN E. WARNER, JOHN A. MANKE. 

